The oak frame industry quote standard is that when you receive a quote for a building, it is typically a generic estimate based on standard specifications. However, the true cost of the building can only be determined once a structural engineer has completed their calculations. If any upgrades to the timber are required to meet structural regulations, these will be added to the original quote.

You may also find that some framers do not include structural calculations in their quotes. Instead, they may rely on standard calculations that do not account for your specific site conditions, building specification, size, or orientation. If additional calculations are needed later in the process, this could result in unexpected costs.

At Oak Frames Direct, we take a different approach. Our quotes include structural calculations* tailored to your building and site, ensuring that the design meets all necessary structural requirements from the outset. As the frame size, span, or pitch increases, the structure is upgraded accordingly, giving you peace of mind that the price we quote is the price you will pay—without hidden extras.

*Structural Calculations

We include the cost of structural calculations only for buildings with a floor area exceeding 30m². For smaller structures, structural calculations are not included as standard.

However, in some cases, structural calculations may still be required for smaller structures, including:

• When the structure is part of a larger development, renovation, or extension project and may be required for building regulations.
• When the structure is intended for public use and may need approval from building control.
• When the structure is under 30m² but has a complex design.
• When the structure is located in an area with extreme weather conditions.

For projects like these, including porches, where structural calculations may be necessary, we recommend confirming this early so the cost can be included in your quote. The cost for structural calculations is currently £750 + VAT.

Our goal is to ensure transparency and accuracy in pricing so that you can confidently plan your oak frame project with no surprises.

* In our experience, it’s crucial that every building exceeding 30m² is calculated to avoid any issues of under-specification, beam size or bracing. We also guarantee site orientation and elevation of your building have been considered.